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authorLyude Paul <lyude@redhat.com>2019-08-01 18:01:17 -0400
committerBjorn Helgaas <bhelgaas@google.com>2019-08-15 11:59:49 -0500
commitad54567ad5d8e938ee6cf02e4f3867f18835ae6e (patch)
tree563937840c9afd65fb27063f9146fe18b9feaf2b /drivers/iio/light/isl29018.c
parent5f9e832c137075045d15cd6899ab0505cfb2ca4b (diff)
downloadlinux-ad54567ad5d8e938ee6cf02e4f3867f18835ae6e.tar.bz2
PCI: Reset both NVIDIA GPU and HDA in ThinkPad P50 workaround
quirk_reset_lenovo_thinkpad_50_nvgpu() resets NVIDIA GPUs to work around an apparent BIOS defect. It previously used pci_reset_function(), and the available method was a bus reset, which was fine because there was only one function on the bus. After b516ea586d71 ("PCI: Enable NVIDIA HDA controllers"), there are now two functions (the HDA controller and the GPU itself) on the bus, so the reset fails. Use pci_reset_bus() explicitly instead of pci_reset_function() since it's OK to reset both devices. [bhelgaas: commit log, add e0547c81bfcf] Fixes: b516ea586d71 ("PCI: Enable NVIDIA HDA controllers") Fixes: e0547c81bfcf ("PCI: Reset Lenovo ThinkPad P50 nvgpu at boot if necessary") Link: https://lore.kernel.org/r/20190801220117.14952-1-lyude@redhat.com Signed-off-by: Lyude Paul <lyude@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Ben Skeggs <bskeggs@redhat.com> Cc: Lukas Wunner <lukas@wunner.de> Cc: Daniel Drake <drake@endlessm.com> Cc: Aaron Plattner <aplattner@nvidia.com> Cc: Peter Wu <peter@lekensteyn.nl> Cc: Ilia Mirkin <imirkin@alum.mit.edu> Cc: Karol Herbst <kherbst@redhat.com> Cc: Maik Freudenberg <hhfeuer@gmx.de>
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